Happy Pillow Fight Day!

April 6, 2013 |compiled from wire photos

Mass public pillow fights have been arranged in numerous cities around the world as part of the 'Urban Playground Movement' which facilitates free, public non-commercial events.

Oli Scarff/Getty Images

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Revellers take part in a giant pillow fight in Trafalgar Square on 'International Pillow Fight Day' on April 6, 2013 in London, England. Mass public pillow fights have been arranged in numerous cities around the world as part of the 'Urban Playground Movement' which facilitates free, public non-commercial events.

Oli Scarff/Getty Images

1of23

Revellers take part in a giant pillow fight in Trafalgar Square on 'International Pillow Fight Day' on April 6, 2013 in London, England. Mass public pillow fights have been arranged in numerous cities around the world as part of the 'Urban Playground Movement' which facilitates free, public non-commercial events.